To the farewell for Philip Seymour Hoffman. Family and friends gathered to say good-bye at the wake in Manhattan last night. The private funeral is later today as we are learning more about the actor's battle with drug addiction. ABC's Alex Perez has the story. Reporter: One by one Philip Seymour Hoffman's grieving friends and family arrived at his wake last night to say good-bye. Among them his three children heads bowed to avoid the cameras followed by his longtime girlfriend Mimi o'donnell and a few famous faces in the crowd, Amy Adams, Justin they are row, cate Blanchett and Joaquin Phoenix paying their respects. Since he was found dead in his apartment from an apparent heroin overdose fans showing an outpouring of support. The west wing creator Aaron Sorkin penned his obituary in "Time" magazine noting their similar struggle, we were both fathers of young children and we were both recovering drug addicts. Remembering and eerie conversation from the past where he said if one of us dies of an overdose possibly ten people who were about to won't. He meant that our deaths would make news and maybe scare someone clean. The celebrated actor was candid about his battle with addiction on CBS' "60 minutes" in 2006. So this was drugs or alcohol or both? Ah, yes. All that stuff, yeah. Anything I could get my hands on, yeah. Yeah, I liked it all. Reporter: That addiction reportedly resurfaced last may after more than two decades of sobriety. Amid the grief, an ongoing investigation to find Hoffman's drug dealers, two people arrested in possible connection to the case faced unrelated drug charges in court Thursday and were released. A third, 57-year-old musician Robert vineberg was also arrested and had Hoffman's number in his cell phone. All deny involvement. And besides that, private funeral here in New York there are plans to hold a larger memorial for Hoffman later this month. Robin, George, still so many trying to make sense of all this. Okay, Alex, thanks very much.

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